ISGREATEREQUAL(P) POSIX Programmer's Manual ISGREATEREQUAL(P)
NAME
isgreaterequal - test if x is greater than or equal to y
SYNOPSIS
#include <math.h>
int isgreaterequal(real-floating x, real-floating y);
DESCRIPTION
The isgreaterequal() macro shall determine whether its first argument is greater than or
equal to its second argument. The value of isgreaterequal( x, y) shall be equal to
(x) >= (y); however, unlike (x) >= (y), isgreaterequal( x, y) shall not raise the invalid
floating-point exception when x and y are unordered.
RETURN VALUE
Upon successful completion, the isgreaterequal() macro shall return the value of
(x) >= (y).
If x or y is NaN, 0 shall be returned.
ERRORS
No errors are defined.
The following sections are informative.
EXAMPLES
None.
APPLICATION USAGE
The relational and equality operators support the usual mathematical relationships between
numeric values. For any ordered pair of numeric values, exactly one of the relationships
(less, greater, and equal) is true. Relational operators may raise the invalid floating-
point exception when argument values are NaNs. For a NaN and a numeric value, or for two
NaNs, just the unordered relationship is true. This macro is a quiet (non-floating-point
exception raising) version of a relational operator. It facilitates writing efficient code
that accounts for NaNs without suffering the invalid floating-point exception. In the SYN-
OPSIS section, real-floating indicates that the argument shall be an expression of real-
floating type.
RATIONALE
None.
FUTURE DIRECTIONS
None.
SEE ALSO
isgreater() , isless() , islessequal() , islessgreater() , isunordered() , the Base Defi-
nitions volume of IEEE Std 1003.1-2001 <math.h>
COPYRIGHT
Portions of this text are reprinted and reproduced in electronic form from IEEE Std
1003.1, 2003 Edition, Standard for Information Technology -- Portable Operating System
Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2003 by
the Institute of Electrical and Electronics Engineers, Inc and The Open Group. In the
event of any discrepancy between this version and the original IEEE and The Open Group
Standard, the original IEEE and The Open Group Standard is the referee document. The orig-
inal Standard can be obtained online at http://www.opengroup.org/unix/online.html .
IEEE/The Open Group 2003 ISGREATEREQUAL(P)